diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index b4b99a73da..1458dd76d6 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -20,7 +20,6 @@
 #include "userdiff.h"
 #include "oid-array.h"
 #include "packfile.h"
-#include "pack-bitmap.h"
 #include "object-file.h"
 #include "object-name.h"
 #include "odb.h"
@@ -844,28 +843,6 @@ static int batch_one_object_oi(const struct object_id *oid,
 	return payload->callback(oid, NULL, 0, payload->payload);
 }
 
-static int batch_one_object_packed(const struct object_id *oid,
-				   struct packed_git *pack,
-				   uint32_t pos,
-				   void *_payload)
-{
-	struct for_each_object_payload *payload = _payload;
-	return payload->callback(oid, pack, nth_packed_object_offset(pack, pos),
-				 payload->payload);
-}
-
-static int batch_one_object_bitmapped(const struct object_id *oid,
-				      enum object_type type UNUSED,
-				      int flags UNUSED,
-				      uint32_t hash UNUSED,
-				      struct packed_git *pack,
-				      off_t offset,
-				      void *_payload)
-{
-	struct for_each_object_payload *payload = _payload;
-	return payload->callback(oid, pack, offset, payload->payload);
-}
-
 static void batch_each_object(struct batch_options *opt,
 			      for_each_object_fn callback,
 			      unsigned flags,
@@ -875,56 +852,17 @@ static void batch_each_object(struct batch_options *opt,
 		.callback = callback,
 		.payload = _payload,
 	};
+	struct odb_source_info source_info;
+	struct object_info oi = {
+		.source_infop = &source_info,
+	};
 	struct odb_for_each_object_options opts = {
 		.flags = flags,
+		.filter = &opt->objects_filter,
 	};
-	struct bitmap_index *bitmap = NULL;
-	struct odb_source *source;
 
-	/*
-	 * TODO: we still need to tap into implementation details of the object
-	 * database sources. Ideally, we should extend `odb_for_each_object()`
-	 * to handle object filters itself so that we can move the filtering
-	 * logic into the individual sources.
-	 */
-	odb_prepare_alternates(the_repository->objects);
-	for (source = the_repository->objects->sources; source; source = source->next) {
-		struct odb_source_files *files = odb_source_files_downcast(source);
-		int ret = odb_source_for_each_object(&files->loose->base, NULL, batch_one_object_oi,
-						     &payload, &opts);
-		if (ret)
-			break;
-	}
-
-	if (opt->objects_filter.choice != LOFC_DISABLED &&
-	    (bitmap = prepare_bitmap_git(the_repository)) &&
-	    !for_each_bitmapped_object(bitmap, &opt->objects_filter,
-				       batch_one_object_bitmapped, &payload)) {
-		struct packed_git *pack;
-
-		repo_for_each_pack(the_repository, pack) {
-			if (bitmap_index_contains_pack(bitmap, pack) ||
-			    open_pack_index(pack))
-				continue;
-			for_each_object_in_pack(pack, batch_one_object_packed,
-						&payload, flags);
-		}
-	} else {
-		struct odb_source_info source_info;
-		struct object_info oi = {
-			.source_infop = &source_info,
-		};
-
-		for (source = the_repository->objects->sources; source; source = source->next) {
-			struct odb_source_files *files = odb_source_files_downcast(source);
-			int ret = odb_source_for_each_object(&files->packed->base, &oi,
-							     batch_one_object_oi, &payload, &opts);
-			if (ret)
-				break;
-		}
-	}
-
-	free_bitmap_index(bitmap);
+	odb_for_each_object_ext(the_repository->objects, &oi,
+				batch_one_object_oi, &payload, &opts);
 }
 
 static int batch_objects(struct batch_options *opt)